Home / 2,790.53-3,850.85-1,531.57

Finding the Fourth Proportional to 2,790.53, 3,850.85 and 1,531.57

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Solution

The fourth proportional to 2,790.53, 3,850.85 and 1,531.57 is: 2,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.53 : 3,850.85 = 1,531.57 : x
  2. Step 2: Convert to fraction form
    2,790.53/3,850.85 = 1,531.57/x
  3. Step 3: Cross multiply
    2,790.53x = 3,850.85 × 1,531.57
  4. Step 4: Simplify right side
    2,790.53x = 5,897,838.68
  5. Step 5: Solve for x
    x = 5,897,838.68/2,790.53
  6. Step 6: Final answer
    x = 2,113.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.